the atlantic seaboard. >>> mourning and celebrating nelson mandela. world leaders travel to south africa for an unprecedented gathering. >>> and the pittsburgh steelers play hot potato in a frantic final play agasthe dolphins. captioning funded by cbs news" for monday, december 9th, 2013. good morning. >>> this is the "cbs morning news" for monday, december 9th, 2013. good morning. good to be with you. i'm anne-marie green. well, this morning's commute for folks from pennsylvania to new england is going to be a mess. a powerful and deadly storm that started in texas moved east, dropping a mixture of snow, ice, and freezing rain that caused traffic headaches and flight delays, and this morning winter weather advisories and warnings are posted from missouri to maine.